Seal



llgl'z, 1947. v F, BOTTQMLEY y y 2,426,174

SEAL

Filed Aug. 22, 1944 'as' mounted in a ball bearing unit;

l tion; f,

Fig. is a fraerriental end "view of the outer Patented Aug. 26, 1947 SEAL Frankiottomlcy, Barrington, R. I., assignor to Sealol Corporation, a corporation of Rhode Island Application August 2.2-, 1944, Serial No. 550,607

8 Claims. (Cl. 286-41) This invention relates to a seal for relatively rotating members which havea relation" toeach other such as the inner and outer raceways of ball bearings.

The inner and outer raceways of ball bearings have been recessed so as to provide a pocket to retain some sealing means therein. cases, however, a considerable depth of pocket is required asl the seals Which are provided have considerable axial extent. This arrangement makes the relatively rotating members of ball I2 and a. portion I6 of the inner raceway II.

. A sealing face I 1 is provided on the inner race- In many bearing units large and clumsy yand requires `a greater space for the same to be mounted in.

One of the objects of this invention is to provide a seal for relatively rotating members such as are found in ball bearing raceways whereby' the axial extent of the seal may be reduced to a minimum and the entire unit may be made much smaller than heretofore.

Anotherobject of the invention, is to provide for a more accurate and better control of the pressures which will be applied on the members' which providel the seal.

With these and other objects in view, the invention consists of certain novel features `of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings: 's

Fig. 1 is va sectional .View illustrating my seal Fig. 2 is an end'view of the unit shown in Fig. 1;

Fig. 3 is a sectional View of.the"diaphragm` member alone; 'y

Fig. 4 is av sectional viewsiinilar to Fig. 1 but illustrating the seal asapplied in reverserelamember of `the sealing means ,of the modification shown inlg. fi.

In proceeding Withthis invention I provide projections on a diaphragmv ofl rubber-like material for localized engagementfwith the pressureapplying ringwhereby I am enabled to direct the liacepressure desired;` .The pressurel applying washer maybe deflected sof-asfi'o assist in ythis control whichdeflectionalso` serves to stiften the washeriorthe application .oilagreater amount of pressure or wthe utilization .ofthinner-material.` .4 A ,1

With reference to the drawing IIJ` designates wayl .member by means of `a radially extending surface at the end ofthe cut-out portion IB. .A sealing unit designated generally I8 is located in this recess I4 and comprises three members.

v There is a sealing ring I9 which'has a surface 2'0 ground to match the surface I'I so as to :tit

snugly thereagainst and form a seal therewith. This ring I9 may -be made of any suitable niaterial but likely will be chosen from some plastic or carbon for this purpose.

A notch 2l .is provided in the cut-out portion I5 of the outer raceway I2 and in this notch is located a pressure-applying disc member 22 which` comprises a solid ring portion 23 deflected as at 24 inwardly toward the diaphragm to beA engaged and provided with a plurality of lingers 25 extending radially toward the inner raceway generallyy a balLbearingunit which has an inner raceway I [fand vo balls I 3 lbetweenthe wo. A recessfljlA 'is'` provided as shown 'in Fig. 1, the portion 30 engages the' shoulder 3| and is pressed against this shoulder by the deflected portion' of the ring disc 22 while at its inner edge the sealing member I9 engages theface Kportion 32 of the diaphragm and is bonded thereto.. The projection 28 is engaged by the inner ends of the ngers 25 `so as to press this inner periphery of the diaphragm which carries the sealing ringtoward. the sealing faces 20 Yand I1 that they may tightly' engage and prevent, any iluid, which may be contained within the casing where the ball bearing "is mounted from'moving outwardly through the ball rings.

In some cases the inverse relation of the part shown in Fig. 1 may be desired and in Fig.` 4,1 `have, provided a sealing face I1'V on the outer member I2 tobe engaged by` a rin'gjlil' whilethe ringy member 22 has its continuous edge 23v along itsinner edge` withfarms 25 extending radially outwardly therefrom. In thisI case the groove 2 I isuprovided in theinner raceway member II' `toreceivetheportion 23' of theA pressure applying" disc. The rubber-'likeV diaphragm 26 s is The peripheral portion 23 extends 3 i latter to be engaged by the deflected portion 23' while the fingers 25' engage the projecting portion 28 to apply pressure thereon. The sealing member I9' may apply pressure on the sealing face sufficiently to maintain a seal between the parts.

By reason of the projection on the diaphragm and deected portion of the pressure applying disc pressure may be localized to be directed along the axial direction desired and at the radial distance desired that a most efilcient result may be obtained.

I claim: i

1. In a fluid sealing device for relatively rotating parts, one of saidparts having aholding groove and the other a sealing face in a plane at right angles to the axis of rotation, a. member engaging said holding groove and extending radially from that part toward the other part,

and a member of rubber-like material vlradially disposed between said parts having a sealing surface on one side thereof to engage said sealing face and provided kwith projections on the opposite side thereof and extending axially toward the other member to provide localized points of engagement with the other member, one of said proiectionsbeing in axial alignment with the sealing face and the other adjacent said groove.

2. In a iluid sealing device for relatively rotating parts, one of said parts having a holding groove and the other a sealing face in a plane at right angles to the axis of rotation; the combination of three members, one member providing a sealing surface to abut the said sealing face, and axially movable with relation thereto, the second member engaging said holding groove and extending radially from that part toward the other part, and a third member of rubberlike material radially disposed between thel first and second members and provided with projections extending axially toward the second member to provide localized points of engagement with said second member, one of said points of engagement being in axial alignment with the sealing face and the other point of engagement being adjacent said groove.

3. In a fluid sealing device for relatively rotating parts, one of said parts having a holding groove and the other a sealing face in a plane at right angles to the axis of rotation; the combination of three members, one member providing a sealing surface to abut the said sealing face, and axially movable with relation thereto, the second member engaging said holding groove and extending radially from that part toward the other part, and a third member of rubberlike material radially disposed between the rst and second members and provided with projections extending axially toward the second member to provide localized points of engagement with said second member, one point of engagement being in axial alignment with the said sealing face. f

4. In a fluid sealing device for relatively rotating parts, one of said parts having a holding groove and the other a sealing face in a'plane at right angles to the axis of rotation: the combination of three members, one member providing a sealing surface to abut the said sealing face, and axially movable with relation thereto, the second member engaging said holding groove and extending radially from that part toward the other part, and a third member of rubberlike material radially disposed between the ilrst and second members and provided with projections extending axially toward the second member to provide localized points of engagement with said second member, one point of engagement being in axial alignment with the said sealing face and the other point of engagement being adjacent said groove.

5. In a fluid sealing device for relatively rotating parts, one of said parts having a holding groove and the other a sealing face in a plane at right angles to the axis of rotation; the cornbination of three members, one member providing a sealing surface to abut the said sealing face, and axially movable with relation thereto, the second member engaging said holding groove and extending radially from that part toward the other part, and a third member of rubber-like material radially disposed between the rst and second members and .provided with projections extending axially toward the second member to provide localized points of engagement with said second member, onepoint of engagement being in axial alignment with the sealing face and the other point of engagement being adjacent said groove, said second member being deflected towards the projection adjacent to said holding groove.

6. In a fluid sealing device for relatively rotating parts, one of said parts having a holding groove and the other a sealing face in a plane at right angles to the axis of rotation; the cornbination of three members, one member providing a sealing surface to abut the said sealing face, and axially movable with relation thereto, the second member engaging said holding groove and extending radially from that part toward the other part, and a third member of rubberlike material radially disposed between the iirst and second members and provided with projections extending axially toward the second member to provide localized points of engagement with said second member, one point of engagement being in axial alignment with the said sealing face and the other point of engagement being adjacent said groove, said second member being deflected to stiil'en the same adjacent its connection to said holding groove and in a radial position to be engaged by the projection on said third member.

'7. In a iluid sealing device for relatively rotating parts, one of said parts having a holding groove and the other a sealing face in a plane at right angles to the axis of rotation; the combination of three members, one member providing a sealing surface to abut the said sealing face, and axially movable with relation thereto, the second member engaging said holding groove and extending radially from that part toward the other part, and a third member of rubberlike 'material radially disposed between the first and second members and provided with projections extendlng axially toward the second member to provide localized points of engagement with said second member, one point of engagement being in axial `alignment with the sealing face and the other point of engagement 'being adjacent said groove, said first and third memb'ers being bonded together to be handled as a single unit.

8. In a fluid sealing device for relatively rotating part's, one of said parts having a holding groove and the other a sealing face in a plane at right angles to the axis of rotation; the combination of three members, one member providing a sealing surface to abut the said sealing face,

and axially movable with relation thereto, the second member engaging said holding groove and having spaced arms extending radially from that part toward the otherpart, and a third memof engagement being in axial alignment with l0 the sealing face and the other point of engagement being adjacent said groove.

A FRANK BOIIOMIEY.

REFERENCES CITED The following references are of record in the ille of this patent:

Nu'mber UNITED STATES PATENTS Name Date Okun Nov. 12, 1940 Okun Nov. 12, 1940 `Schjolin `Jan. 12, 1943: 

